Two went for £34,950 each, while even small pastels which took Kieron a few minutes to paint sold for up to £7,000.

Another 10 of his pictures are due to sell for £100,000 at his seventh exhibition, opening next Friday in Holt, Norfolk. His parents Michelle, 39, and Keith, 45, believe their son’s earnings will soon top £1million.

Kieron, who has an eight-year-old sister, Billie-Jo, has already bought a new £150,000 home for his family in Ludham, Norfolk.

Mrs Williamson said: “His paintings are continuing to progress and improve but he is still a normal boy.”

His paintings are continuing to progress and improve but he is still a normal boy

Mrs Williamson

Kieron was hailed as an art prodigy after he began to paint while on holiday in 2008.